Question

Assertion : There are $72-75$ heart beats per minute on an average when a person is performing normal work.
Reason : One heart beat is completed in $0.8$ second.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (A)

One heartbeat completes in $0.8-0.83$ second. Therefore, there are $60/0.8$ or $60/0.83$, i.e., $72-75$ heart beats per minute on an average when a person is performing normal work.